package com.itheima.stock.service.Impl;

import com.google.common.base.Strings;
import com.itheima.stock.mapper.SysUserMapper;
import com.itheima.stock.pojo.SysUser;
import com.itheima.stock.service.UseService;
import com.itheima.stock.utils.IdWorker;
import com.itheima.stock.vo.req.LoginReqVo;
import com.itheima.stock.vo.resp.LoginRespVo;
import com.itheima.stock.vo.resp.R;
import com.itheima.stock.vo.resp.ResponseCode;
import org.apache.commons.lang3.RandomStringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@Service("UseService")
public class useServiceImpl implements UseService {

    @Autowired
    private SysUserMapper sysUserMapper;

    @Autowired
    private PasswordEncoder passwordEncoder;

    @Autowired
    private RedisTemplate redisTemplate;

    @Autowired
    private IdWorker idWorker;

    @Override
    public R<LoginRespVo> login(LoginReqVo vo) {
        if (vo == null || Strings.isNullOrEmpty(vo.getUsername()) || Strings.isNullOrEmpty(vo.getPassword()) || Strings.isNullOrEmpty(vo.getRkey())) {
            return R.error(ResponseCode.DATA_ERROR.getMessage());
        }
        //验证码校验
        //获取redis中rkey对应的code验证码
        String rCode = String.valueOf(redisTemplate.opsForValue().get(vo.getRkey()));
        if (Strings.isNullOrEmpty(rCode) || !rCode.equals(vo.getCode())) {
            return R.error(ResponseCode.SYSTEM_VERIFY_CODE_ERROR.getMessage());
        }
        //redis清除key
        redisTemplate.delete(vo.getRkey());
        //根据用户名查询用户信息
        SysUser user = sysUserMapper.findByUserName(vo.getUsername());
        //判断用户是否存在，存在则密码校验比对
        if (user == null || !passwordEncoder.matches(vo.getPassword(), user.getPassword())) {
            return R.error(ResponseCode.SYSTEM_PASSWORD_ERROR.getMessage());
        }
        //组装登录成功数据
        LoginRespVo respVo = new LoginRespVo();
        //属性名称与类型必须相同，否则copy不到
        BeanUtils.copyProperties(user, respVo);
        return R.ok(respVo);
    }

    @Override
    public R<Map> generateCaptcha() {
        String checkCode = RandomStringUtils.randomNumeric(4);
        String rkey = String.valueOf(idWorker.nextId());
        redisTemplate.opsForValue().set(rkey, checkCode, 60, TimeUnit.SECONDS);
        HashMap<String, String> map = new HashMap<>();
        map.put("rkey", rkey);
        map.put("code", checkCode);
        return R.ok(map);

    }
}
